package com.mini.game;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.lang.annotation.Annotation;
import java.util.Map;

@Component
public class ApplicationContextProvider implements BeanFactoryPostProcessor, ApplicationContextAware {

    /**
     * Spring应用上下文环境
     */
    private static ConfigurableListableBeanFactory beanFactory;
    /**
     * 上下文对象实例
     */
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        ApplicationContextProvider.applicationContext = applicationContext;
    }

    /**
     * 获取Spring上下文
     *
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 通过name获取Bean
     *
     * @param name
     * @return
     */
    public static <T> T getBean(String name) {
        return (T) beanFactory.getBean(name);
    }

    /**
     * 通过class获取Bean
     *
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return beanFactory.getBean(clazz);
    }


    public static Map<String,Object> getBeansWithAnnotation(Class<? extends Annotation> annotationType){
        return beanFactory.getBeansWithAnnotation(annotationType);
    }
    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return beanFactory.getBean(name, clazz);
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        this.beanFactory = beanFactory;
    }
}
